Flexibility Simulation And Kinetics Analysis Of New Micro Swing Two Stroke Combustion Engine

Flexible Multi-body Systems (FMBS) consist of rigid bodies and flexible bodies, its was used in many producing fields in people's life. Due to the development of high speed machinery, robots and aerospace structures, the research of FMBS undergoing gross motion and elastic deformation is getting more and more important.The Major content is with the finite element analysis software ANSYS and simulation software ADAMS their respective advantages to take a flexible dynamics simulation analysis and research to the micro-structure of the engine. Specially the paper carry out the appropriate and rational analysis to the stability of the system.Based on in the modality method of superposition and the structure dynamics restraint modality synthesis method, has established the dynamic equation using the belt while child's Lagrange equation, has provided the rationale for the hard and soft coupling analysis. Explained from mathematics angle"obtains the ADAMS flexible body matrix by the ANSYS modal analysis"rationality. Carries on the modality analysis to it, obtains the natural frequency from the analysis result which the center suspends and inspires. Its first step natural frequency is 14394Hz, is bigger than the operating frequency far, can effective avoid the resonance region. Carries on the simplification to the model, and enhances the unit the precision. The optimized neutral document enhanced the ADAMS simulation speed. Compared with"the new pendulum type two stroke miniature pendulum type engine"the hard and soft coupling simulation displacement curve, the speed and the acceleration curve, the hard and soft coupling and the rigid simulation displacement curve comparison tallied, confirm have at first conformed to the design requirement take the rigid design as the starting point movement precision. When by ANSYS transient state mechanical analysis determination load along with time variation, structure response. In transient state mechanical analysis input ADAMS extracts size and direction along with time variation contact reaction. Obtains the output data are along with the time variation displacement quantity and other exports, has confirmed the structure stability.This research work of the thesis has the extremely vital significance for structure dynamic characteristic forecast and design of the new two strokes micro swing combustion engine. Its analyzed result has important significance to forecast of dynamic character and even to the design of structure. It established the theoretic base for the next step of multi-fields coupling analysis.